English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Towards ferromagnetic quantum criticality in FeGa3-xGex: 71Ga NQR as a zero-field microscopic probe

Majumder, M., Wagner, M., Cardoso-Gil, R., Gille, P., Steglich, F., Grin, Y., et al. (2016). Towards ferromagnetic quantum criticality in FeGa3-xGex: 71Ga NQR as a zero-field microscopic probe. Physical Review B, 93(6): 064410, pp. 1-5. doi:10.1103/PhysRevB.93.064410.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-C6CA-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-004E-8
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Majumder, M.1, Author              
Wagner, M.2, Author              
Cardoso-Gil, R.3, Author              
Gille, P.4, Author
Steglich, F.5, Author              
Grin, Y.6, Author              
Baenitz, M.7, Author              
Affiliations:
1Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
2Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
3Raul Cardoso, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863420              
4External Organizations, ou_persistent22              
5Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863467              
6Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              
7Michael Baenitz, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863471              

Content

show
hide
Free keywords: -
 Abstract: Ga-71 NQR, magnetization, and specific-heat measurements have been performed on polycrystalline Ge-doped FeGa3 samples. A crossover from an insulator to a correlated local moment metal in the low-doping regime and the evolution of itinerant ferromagnet upon further doping is found. For the nearly critical concentration at the threshold of ferromagnetic order, x(C) = 0.15, (71)(1/T1T) exhibits a pronounced T-4/3 power law over two orders of magnitude in temperature, which indicates three-dimensional quantum critical ferromagnetic fluctuations. Furthermore, for the ordered x = 0.2 sample (T-C approximate to 6K), (71)(1/T1T) could be fitted well in the frame of Moriya's self-consistent renormalization theory for weakly ferromagnetic systems with 1/T1T similar to chi. In contrast to this, the low-doping regime nicely displays local moment behavior where 1/T1T similar to chi(2) is valid. For T -> 0, the Sommerfeld ratio gamma = (C/T) is enhanced (70 mJ/mole K-2 for x = 0.1), which indicates the formation of heavy 3d electrons.

Details

show
hide
Language(s): eng - English
 Dates: 2016-02-052016-02-05
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1103/PhysRevB.93.064410
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 93 (6) Sequence Number: 064410 Start / End Page: 1 - 5 Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008